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Debt	6 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	4.  DEBT At March 31, 2021 and September 30, 2020, we had zero and $12, respectively, in borrowings outstanding under our revolving credit facility with Wells Fargo Bank, N.A. ("Wells Fargo"), and long-term debt related to loans on capital expenditures of $140 and $205, respectively. At March 31, 2021, we also had $6,964 in outstanding letters of credit and total availability of $93,036 under our revolving credit facility without triggering our financial covenants under the Amended Credit Agreement (as defined below). The Company maintains a $100 million revolving credit facility that matures on September 30, 2024, pursuant to our Second Amended and Restated Credit and Security Agreement with Wells Fargo (as amended, the “Amended Credit Agreement”). The Amended Credit Agreement contains customary affirmative, negative and financial covenants as disclosed in Item 7 of our Annual Report on Form 10-K for the year ended September 30, 2020. As of March 31, 2021, the Company was in compliance with the financial covenants under the Amended Credit Agreement.

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- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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